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wpyyl 2001-12-13 11:32:14

在delphi中怎样对日期和时间进行计算,得到两个不同日期和时间之间的天数和小时

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王集鹄 2001-12-13

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uses
DateUntils;

{ YearSpan and MonthSpan are approximates, not exact but pretty darn close }
function YearSpan(const ANow, AThen: TDateTime): Double;
function MonthSpan(const ANow, AThen: TDateTime): Double;
function WeekSpan(const ANow, AThen: TDateTime): Double;
function DaySpan(const ANow, AThen: TDateTime): Double;
function HourSpan(const ANow, AThen: TDateTime): Double;
function MinuteSpan(const ANow, AThen: TDateTime): Double;
function SecondSpan(const ANow, AThen: TDateTime): Double;
function MilliSecondSpan(const ANow, AThen: TDateTime): Double;